I think the view that people have already taken that his phone was never hacked is more to do with people’s dislike of him, rather than the actual case.
I think this is where the misunderstandings take place. It's true some people just don't like him and want him to lose. But I think most people believe there is a good likelihood his phone was hacked on some of these occasions. But you have to have some evidence. And that's what people are sceptical about, that he seems weak on evidence.
However, in the Johnny Depp case in London, the judge did actually find that some incidents that had no evidence to support them happened because they were similar in pattern to other incidents.
Interestingly, in the US trial, a couple of those incidents were proven by witnesses to be not true. Not saying that the UK judge was wrong in his overall judgement against Depp but it illustrates that judges can make assumptions, sometimes incorrectly, in these civil suits that they probably wouldn't in a criminal suit.
So it might be that if Harry's scattergun approach of producing those articles might actually persuade a judge of just one article being obtained illegally, the judge might be of a mind to believe others that follow the,same pattern.
I believe that initially Harry submitted 120 or so articles to his lawyers and I guess they chose these as the most likely to succeed.